http://wiki.lustre.org/index.php?action=history&feed=atom&title=Lustre_Clients_Overview 2026-07-12T07:55:36Z Revision history for this page on the wiki MediaWiki 1.39.7 http://wiki.lustre.org/index.php?title=Lustre_Clients_Overview&diff=2719&oldid=prev 2017-08-31T05:45:48Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 22:45, 30 August 2017</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l10">Line 10:</td> <td colspan="2" class="diff-lineno">Line 10:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Lustre File System Components]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Lustre File System Components]]</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[Category:Lustre Systems Administration]]</ins></div></td></tr> <!-- diff cache key wiki_lustre_org:diff::1.12:old-2585:rev-2719 --> </table>

Malcolm http://wiki.lustre.org/index.php?title=Lustre_Clients_Overview&diff=2585&oldid=prev 2017-08-02T03:28:48Z

<p>Created page with &quot;Lustre clients are responsible for creating a coherent, aggregate view of the Lustre file system as a POSIX storage entity. The client establishes connections with the metadat...&quot;</p> <p><b>New page</b></p><div>Lustre clients are responsible for creating a coherent, aggregate view of the Lustre file system as a POSIX storage entity. The client establishes connections with the metadata and object storage servers. The metadata for a file includes the file layout information (also referred to as file striping), which is a list of the objects held on the OSTs (each object represents one stripe), and the access pattern. Clients communicate with the OSS servers directly; the MDS does not participate in file IO once the file is opened, until the file is closed.<br /> <br /> Lustre uses a cache-coherent distributed lock manager for controlling file IO, ensuring that all Lustre clients can access all files in the file system in parallel, with both read and write concurrency.<br /> <br /> Lustre aims for very close compliance with the POSIX standard. From the Lustre Operations Manual: <br /> <br /> &lt;blockquote&gt;<br /> &#039;&#039;The full POSIX test suite passes in an identical manner to a local EXT4 file system, with limited exceptions on Lustre clients. In a cluster, most operations are atomic so that clients never see stale data or metadata. The Lustre software supports mmap() file I/O.&#039;&#039;<br /> &lt;/blockquote&gt;<br /> <br /> [[Category:Lustre File System Components]]</div>

Malcolm